Whereas the Ancient Mayans defined consciousness in almost evolutionary terms, the Inca civilization considered it a progression of awareness and concern for others, similar to the teachings of Siddhartha Gautama.
The ancient Indian Vedas texts have lent a comparable view of unified consciousness, with a key difference in the purpose of human ascension from stage to stage. Instead of oneness with the universe, the Vedic vision of consciousness emphasizes the importance of attaining knowledge and pure intelligence.
Fluctuations in consciousness theories are not particular to Eastern cultures. A surprising degree of overlap can be found within the field of health and social sciences with regard to dulled, standard, and heightened intensities of awareness, both naturally and as a result of injury or disorder. //wiki